/* Copyright 2017 Fred Sundvik
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <stdint.h>
#include "timer.h"

#include "app_timer.h"

void timer_init() {}

void timer_clear() {}

inline uint16_t timer_read() { return (uint16_t)(timer_read32() & 0xFFFF); }

inline uint32_t timer_read32() {
    uint32_t time = app_timer_cnt_get();
    return time / 32;
}

inline uint16_t timer_elapsed(uint16_t last) { return TIMER_DIFF_16(timer_read(), last); }

inline uint32_t timer_elapsed32(uint32_t last) {
    uint32_t time    = app_timer_cnt_get();
    uint32_t elapsed = app_timer_cnt_diff_compute(time, last * 32);
    return elapsed / 32;
}
